{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304921883",
    "entityType": "User",
    "nonce": "0x6fc02b316add4b634e88196d6f0bbeecc0ee50265d5f3e4e5f139cd9e5022e7f",
    "signature": "0x87cd6df3a793e48b70004721d18a29a0cdf1f3ff5235a248b18f04eba0ce49912702736a1ba62aff7cbf77b7468a9b1458bcb4c2b27281f02c531ddf7dcd9f981c",
    "signer": "0x2e4EEc67e1D72Ead2c23e3aFd5e0a0110ed11E4d",
    "userId": "86534776"
  }
}